Adjusting Apparatus for Projector

ABSTRACT

The present invention comprises a body, an upper cover and the body form a slide, a catching section is in the slide, a side of a front side surface of the catching section has at least one protrusive catching piece, another side of the catching section connects to an adjusting button with extended width, and the adjusting button is protruded from the body, a sliding sleeve set on a side of a front side of the body, a supporter is through the sliding sleeve, a back of the supporter has a plurality of positioning rackmatching with the catching piece, besides, a rear side of the catching section is fastened on one end of a repositioning element, the other end is fixed on a rear wall of the body, the rear side of the catching section is set a guiding element, which two opening ends are through a top edge of the rear wall to attach to a guiding slot formed by two restricting blocks for guiding the catching section to move smoothly.

BACKGROUND OF INVENTION

[0001] 1. Field of the Invention

[0002] The invention relates to an adjusting apparatus, and moreparticularly, to the adjusting apparatus for projector.

[0003] 2. Background of the Invention

[0004] As the science being developed to another stage, projectors areapplied to various fields, such as the consumption products to hightechnology products, the application range is being expandedcontinuously. For instance, the exhibitions for big conference rooms orcommercial projecting screens or televisions, all are to cooperate withthe presentation contents for instantly showing. However, a general typeof flattop projector has to be adjusted for the height of the projectionlens so as to that the projected imagines being in a proper position.According to aforesaid adjusting apparatus for projector, how to fastand easily set up a projector for a user being pleasured to operate andthen promoting the competition becomes an important issue in the field.

[0005] Please refer to FIG. 1, which is a flat-top projector 10 in priorarts. In order to the installment convenience and the clean appearance,generally an adjusting apparatus 12 is designed below a body 11. Then,an adjusting button 121 being pressed is to let a supporter 122 beexpanded and contracted along a vertical direction for a selectedinclined height, so a projection lens 13 is aimed at a screen. Referringto FIG. 2, a bottom of the adjusting button 121 is to combine with abottom of a catching section 123, another end of the catching section123 is set a catching flange 124, which is able to match with apositioning rack 125 of the supporter 122. Further, the bottom of theadjusting button 121 and the catching section 123 have an elasticelement 126, and one end of the elastic element 126 is fastened on abody 127, therefore the adjusting button 121 and the catching section123 are in a slide 251 of the body 127 and freely move. While pressingthe adjusting button 121 and the catching section 123 being moved, thecatching flange 124 is then taken off from the positioning rack 125 soas to that supporter 122 being freely moved along the vertical directionfor a suitable inclined height. The next step is to release theadjusting button 121 to drive a match of catching flange 124 andpositioning rack 125 for keeping a selected height of supporter 122. Dueto projector 10 being applied in a dark environment and the adjustingapparatus 12 install below the body 11 causing hardly finding outadjusting button 121, user must take several times to correctly press onadjusting button 121 to finish fixing the height of projector; besides,the adjusting button 121 is set aside of the supporter 122, a pressingforce is not uniform in case of pressing on adjusting button 121 tobring about the inclined phenomena of the adjusting button 121 and thecatching section 123 shown as a dotted line 129, then the catchingflange 124 cannot smoothly depart from the positioning rack 125. Henceit must applies a harder force to let catching flange 124 come off thepositioning rack 125 for completing the height adjustment of theprojector.

SUMMARY OF INVENTION

[0006] An object of the present invention is to provide an adjustingapparatus for a projector to have an uniform force for guiding anadjusting button and a catching section to simultaneously expanding andabstracting and creating more convenient operation.

[0007] The other object of the present invention is to provide anadjusting apparatus for a projector to have an extended adjusting buttonto be easily pressed and found out for more convenience.

[0008] To approach afore said object, the present invention comprises abody, an upper cover and the body form a slide, a catching section is inthe slide, a side of a front side surface of the catching section has atleast one protrusive catching piece, another side of the catchingsection connects to an adjusting button with extended width, and theadjusting button is protruded from the body, a sliding sleeve sets on aside of a front side of the body, a supporter is through the slidingsleeve, a back of the supporter has a plurality of positioningrackmatching with the catching piece, besides, a rear side of thecatching section is fastened on one end of a repositioning element, theother end is fixed on a rear wall of the body, the rear side of thecatching section is set a guiding element, which two opening ends arethrough a top edge of the rear wall to attach to a guiding slot formedby two restricting blocks for guiding the catching section to movesmoothly.

BRIEF DESCRIPTION OF DRAWINGS

[0009]FIG. 1 is a perspective view of a projector of prior art;

[0010]FIG. 2 is a schematic diagram of an adjusting apparatus of priorart;

[0011]FIG. 3 is a perspective view of an adjusting apparatus of thepresent invention;

[0012]FIG. 4 is a view of an internal structure of the adjustingapparatus of the present invention;

[0013]FIG. 5 is a view of another internal structure of the adjustingapparatus of the present invention;

[0014]FIG. 6(a) is an action schematic diagram of the adjustingapparatus of the present invention;

[0015]FIG. 6(b) is an action side cross-sectional schematic diagramalong A-A direction of the adjusting apparatus of the present invention;

DETAILED DESCRIPTION

[0016] Referring to FIG. 3, which is an adjusting apparatus 20 of apreferred embodiment of the present invention, and the adjustingapparatus 20 comprises a body 21, an adjusting button 22, a supporter23, etc. Via pressing the adjusting button 22 protruded from a frontside surface of the body 21, the positioning rack 231 of the supporter23 is then released or matched. Continuously the supporter 23 in asliding sleeve 24 is capable of freely moving by means of an elasticelement 232 for adjusting an inclined height of the projector.

[0017] Referring to FIG. 4, the body 21 of the adjusting apparatus 20has an upper cover 211. Below the upper cover 211, a front side in body21 is installed a catching section 25, a side of a front surface of thecatching section 25 connects to a rear end of the adjusting button 22and another side is fastened the sliding sleeve 24, a tunnel 241 isinstalled protrusively in a center of a front wall of the sliding sleeve24, a fixing pin 242 sets protrusively right below the tunnel 241, asupporter 23 is inserted into the sliding sleeve 24, around a top end ofa front surface of the supporter 23 is a screw 233, one end of theelastic element 232 is fixed on the screw 233 and pass through thetunnel 241 and the other end of the elastic element 232 is then fastenedon the fixing pin 242, a rear surface of the supporter 23 is levelly seta plurality of positioning rack 231; besides, a center of a rear surfaceof the catching section 25 is mounted a fixing slot 251, which has apositioning pin 252, one end of an elastic repositioning element 26 isplaced into the fixing slot 251 and positioned by the positioned pin 252and the other end of the repositioning element 26 is affixed by a pin212 inside of the body 21, thus the catching section 25 can move freelyin the body 21.

[0018] On the other hand, a bottom end of the rear surface of thecatching section 25 is attached a guiding element 27 with cylinderfigure, two ends of the guiding element 27 are separately extendedtoward inclined and up directions, and two opening ends 271 with “L”figures of internal bending are individually penetrated into two guidingslots 213, which are formed by that two restricting blocks 214 with “L”figures up side down connect two sides of a top edge of the rear wall ofthe body 21. Please refer to FIG. 5 and FIG. 6, a lower side of the rearsurface of the catching section 25 has several clamping pieces 253,which clamp guiding element 27 from both end, and therefore the guidingelement 27 can move freely; a rear wall of the sliding sleeve 24protrudes outwardly to shape a channel 243 with “

” figure, that is to let the positioning rack 231 of the supporter 23 beeasily gone through the channel 243 without disturbance of adjustingmovement of the supporter 23. Below the channel 243 is designed a hole244 so as to that the catching piece 254 move from the catching section25 are without difficulty moved in and out to match or take offpositioning rack 231.

[0019] Referring to FIGS. 6(a) and 6(b), the adjusting apparatus 20enlarge the pressing area of the adjusting button 22 to let the usereasily finds out the location of the adjusting button 22 in a darkenvironment, so the user may fast adjust the height of the projector.Although the pressing area being broadened and a correct pressingposition being hardly found out, a special design for the presentinvention is that while the adjusting button 22 being pressed is todrive the catching section 25 on the rear end of the adjusting button22, then the body 21 is move toward rear side to compress therepositioning element 26 and constantly push the guiding element 27, thetwo opening ends 271 of the guiding element 27 may shift along theguiding slot 213 formed by the two restricting blocks 214 and the body21 to force the whole guiding element 27 moving to a place of the dottedline 27″; in the meantime, the whole catching section 25 connecting tothe guiding element 27 is moved backward to impel the catching piece 254on another side of the catching section 25 shifting toward the back aswell, thus the catching piece 254 may not be inclined and contractinternally to successfully get away with the positioning rack 231 forfreely moving the supporter 23 up and down, and select a proper inclinedheight of the projector. Then, to release the adjusting button 22 anduse the elastic force of the repositioning element 26 to urge thecatching section 25 and the guiding element 27, driving the catchingpiece 254 and the positioning rack 231 for matching, and the elasticelement 232, one end fastened on the supporter 25, pulls the supporter25 down to the positioning rack 231, such as a ratchet or a rack, forpositioning, hence the projector is able to project images properly onthe screen. Moreover, while lowering the height of the projector, it isno need to press the adjusting button 22, on the contrary, to directlypush into supporter 23 along a single direction, it is to let thecatching piece 254 slide along the inclined direction of the positioningrack 231 to fast and conveniently lower the height of the projector andcollect the projector. Similarly, by means of a selected lockingdirection of the positioning rack 231 and a selected pulling directionof the elastic element 232, lifting the height of the projector may notneed to press the adjusting button 22 as well. Further, the upper cover211 lays over the catching section 25 to form a slide 215, and thecatching section 25 is limited from both sides to only shift in theslide 215, therefore shaking condition for the catching section 25 isreduced.

1. An adjusting apparatus for projector comprising: a body having anupper cover, a front side and a rear wall, a slide formed by the bodyand the upper cover, a top edge of the rear wall attached tworestricting blocks to form a guiding slot; a sliding sleeve installed ona side of a front side of the body; a supporter pass through the slidingsleeve and a back surface of the supporter having a plurality ofpositioning rack; a catching section having a front side surface and arear side surface, the catching section installed in the slide, a sideof the front side surface of the catching section having at least aprotrusive catching piece, the catching piece matched with thepositioning rack; an adjusting button connecting to another side of thefront side surface of the catching section and protruding out of thebody; and at least one repositioning element, which one end fastened therear side surface of the catching section and the other end fastened onthe rear wall of the body; and a guiding element connecting to the rearside surface of the catching section, two opening ends of the guidingelement separately being through the guiding slot.
 2. The adjustingapparatus for the projector of claim 1, wherein a width of the adjustingbutton is greater than a half width of the adjusting apparatus.
 3. Theadjusting apparatus for projector of claim 1, wherein the supporter isfastened on one end of an elastic element, the other end of the elasticelement is fixed on the sliding sleeve.
 4. The adjusting apparatus forprojector of claim 3, wherein the sliding sleeve has a hole for theelastic element going through.
 5. The adjusting apparatus for projectorof claim 1, wherein the rear side surface of the catching section has aplurality of clamping pieces, the clamping pieces clamp the guidingelement from both sides for the guiding element moving freely.
 6. Theadjusting apparatus for projector of claim 5, wherein the guidingelement is cylindrical shape.
 7. The adjusting apparatus for projectorof claim 1, wherein the positioning rack is a ratchet with a singledirection.
 8. The adjusting apparatus for projector of claim 1, whereinthe positioning rack is a rack.